i have run a case in OpenFOAM and want to test it also in fluent.i have not acess to gambit now.
How can i convert simple geometry and mesh i created in fluent withot need to install gambit?
I know there is a vice versa tool but i need it reciprocally.
Is it possible?

my case is 2d in real(3d in of) but 2d fluent doesn't accept it.
Isn't a way to modify the file obtained from foammeshtofluent?

I do not know a method for changing a 3d mesh to get a 2d mesh, but I suggest you to use the 3d mesh in fluent with appropriate BC, for example I think you can use symmetry BC in Fluent to "emulate" empty BC in OpenFOAM.